Rotel-RT961-tun-sm 维修电路原理图.pdf

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1、T echnicalManual AM/FM STEREO TUNERRT-961Table of ContentsSpecification.1Parts List.25Adjustment.78PCB Assembly.910Schematic Diagram .1114SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU,TOKYO 150-0045, JAPANSerial. NO.BeginningQuality UncompromisedY-354A-0108/WSpecificationsFM TunerUsable Sensitivity:

2、14.2 dBf50dB Quieting Sensitivity:20.2 dBf (mono)45.3 dBf (stereo)Signal to Noise Ratio (at 65 dBf):73 dBf (mono)70 dBf (stereo)Harmonic Distortion (at 65dBf):0.2% (mono)0.3% (stereo)Frequency Response:10 Hz-15 kHz, 3 dBCapture Ratio:2.0 dBAlternate Channel Selectivity:47 dB (400 kHz)Spurious Respon

3、se Ratio:90 dBImage Rejection Ratio:80 dBIF Rejection Ratio:80 dBAM Suppression Ratio:55 dBStereo Separation(100Hz/1 kHz/10 kHz):40 dB/45 dB/35 dBOutput level:1VAntenna Input:75 ohms unbalancedAM TunerUsable Sensitivity:500 V/mSelectivity:25 dBHarmonic Distortion:0.5%Image Rejection Ratio:45 dBSigna

4、l to Noise Ratio:40 dBOutput level:500 mVAntenna Input:Loop AntennaGeneralPower Consumption:10 wattsPower Requirements (AC):115 volts, 60 Hz (USA version)230 volts, 50 Hz (European version)Weight:3.7 Kg/8.2 lb.Dimensions (W x H x D):440 x 72 x 275 mm173/8 x 27/8 x 107/8RadioFans.CN 收音机爱 好者资料库LEFTRIG

5、HTOUTPUTSFMAMGANTENNAPOWERDISPLAYAFFMMONOPTYTATP67908TUNINGMEMORYAUTOTUNINGPRESETSCANBANDTUNE/PRESET12453EXTREMOTEIN12VTRIGINFMRTTP TA AF STEREOTUNEDAUTOMEMORYPRESETRDBSRDSAM/FM STEREO TUNERMODEL NO. RT-961POWER CONSUMPTION: 10 WRT-961AM/FM STEREO TUNER RT-961AVIS: RISQUE DE CHOC ELECTRIQUENE PAS OU

6、VRIRWARNING:SHOCK HAZARD DO NOT OPENAppearanceRadioFans.CN 收音机爱 好者资料库2Parts List 1/4SYMBOLPARTS NO.DESCRIPTIONJK301066 4TR-2166#4 2P PIN JACKR301,315,RM102053 CR14-101J-ACARBON RESISTOR 100RR201,210,303053 CR14-103J-ACARBON RESISTOR 10KR302053 CR14-123J-ACARBON RESISTOR 12KR207,314,316053 CR14-102J-

7、ACARBON RESISTOR 1KR204053 CR14-222J-ACARBON RESISTOR 2.2KD208053 CR14-272J-ACARBON RESISTOR 2.7KR203053 CR14-201J-ACARBON RESISTOR 200RR318053 CR14-221J-ACARBON RESISTOR 220RR209053 CR14-223J-ACARBON RESISTOR 22KR211053 CR14-332J-ACARBON RESISTOR 3.3KRM103053 CR14-472J-ACARBON RESISTOR 4.7KR205053

8、CR14-473J-ACARBON RESISTOR 47KRM101053 CR14-470J-ACARBON RESISTOR 47RC204,205043 TC500V103CERAMIC CAPACITORC201,202,213043 TC50V223CERAMIC CAPACITOR 0.022uFC209,CM102043 TC50V473CERAMIC CAPACITOR 0.047uFCP401,402068 B2P3-VHCONNECTOR POSTCP105068 B5B-PH-KSCONNECTOR POSTCP102,104068 B7B-PH-KSCONNECTOR

9、 POSTCP106068 S2B-PH-KSCONNECTOR POSTCP103068 S4B-PH-KSCONNECTOR POSTCP201068 B7B-EHCONNECTOR POSTCN402068 C-4695A02CONNECTOR W/WIRE 2P L230CN20068 C-4692A22CONNECTOR W/WIRE 5P L250CN201068 C-4734A05CONNECTOR W/WIRE 7P L180CN11068 C-4692A21CONNECTOR W/WIRE 8P L150CS401019 C-4357A03COVER CAPD201,204,

10、205034 T1N4003-TBDIODED209,302034 T1N4148-86DIODEGND201069 C-4484A00EARTH LUGC212041 UTES1C101-FB ELECTROLYTIC CAPACITOR 16V100uFC211041 UTES1C221-FB ELECTROLYTIC CAPACITOR 16V220uFC210,301,302041 UTES1E470-FB ELECTROLYTIC CAPACITOR 25V47uFC206041 UTES1V332 ELECTROLYTIC CAPACITOR 35V330uFCM101041 UT

11、ES1H100-FB ELECTROLYTIC CAPACITOR 50V10uFC208041 UTES1H010-FB ELECTROLYTIC CAPACITOR 50V1uFC207,307,308041 UTES1H4R7-FB ELECTROLYTIC CAPACITOR 50V4.7uFC203041 UTES1H470-FB ELECTROLYTIC CAPACITOR 50V47uFF201,202036 5ST500 FUSE 250V500MAF201,202069 C-3417AFUSE CLIPJK302065 YKB21-5103AHEAD PHONE JACKJK

12、303065 YKB21-5111AHEAD PHONE JACK017 4TR-2965HEAT SINK FOR IC201IC301031 NJM5532DDICIC302,303031 PC817BICIC201031 NJM317FICRMC101031 SBX3010-52BICR308,309054 TMF1003METAL RESISTOR 100KR310-313054 TMF1001METAL RESISTOR 1KR304,305054 TMF4701METAL RESISTOR 4.7KR306,307054 TMF6801METAL RESISTOR 6.8KR401

13、053 CR1W2M2MOF RESISTOR 2.2MR206,208054 2WS270JFMOF RESISTOR 270RR202054 1WS330JFMOF RESISTOR 330RSW401061 C-4176A08POWER SWITCHPCB ASSY 016X-1320A01-043Parts List 2/4SYMBOLPARTS NO.DESCRIPTIONTS401022 T-1065N01POWER TRANSFORMERCS401044 DE1307E472MSPARK KILLERC305,306044 S50V1000PGSTYROL CAPACITOR 1

14、000PFC309-312044 S50V100PJSTYROL CAPACITOR 100PFQ302,303032 TDTC323TSTRANSISTORQ201,203032 KRC107MTRANSISTORQ202,204,QM101032 KTC3198Y-ATTRANSISTORQ301032 KRA107MTRANSISTORCN403068 C-4750A01WIRE ASSY L110D206034 TRD5.6JST1ZENER DIODED202034 TRD6.2JST1ZENER DIODED207034 TRD12JST1ZENER DIODED203034 TR

15、D30JST1ZENER DIODECF04023 AHCFM2-450BLAM CERAMIC FILTERJLE/U100,JRE/U100068 TDB04SG BASE/POST X02023 CSB456F11CERA RESONATORC38043 TC50V101CERAMIC CAPACITOR 100PC16043 TC50VCH150CERAMIC CAPACITOR 15PC09,58,C59043 TC50VCH270CERAMIC CAPACITOR 27PC08043 TC50VCH330CERAMIC CAPACITOR 33PC37043 TC50V820CER

16、AMIC CAPACITOR 82PC04,07,23047 ECJ2VB1H103KCHIP CAPACITOR 0.01uFC01,06,12,13,17,18,21,22,29,34,40047 ECJ2VB1H223KCHIP CAPACITOR 0.022uFC02,24,25,42047 ECJ2VF1H473ZCHIP CAPACITOR 0.047uFC57047 ECJ2VF1H104ZCHIP CAPACITOR 0.1uFC10047 ECJ2VG1H101JCHIP CAPACITOR 100PFCLU52,CRU52047 ECJ2VG1H100DCHIP CAPAC

17、ITOR 10PFCL50,CR50047 ECJ2VG1H121JCHIP CAPACITOR 120PFC54047 ECJ2VG1H271JCHIP CAPACITOR 270PFC36047 ECJ2VG1H331JCHIP CAPACITOR 330PFC43047 ECJ2VG1H681JCHIP CAPACITOR 680PFCL52,CR52047 ECJ2VG1H680JCHIP CAPACITOR 68PFCLU50,CRU50047 ECJ2VG1H820JCHIP CAPACITOR 82PFRL57,RR57055 ERJ6GEYJ152VCHIP RESISTOR

18、1.5KR35055 ERJ6GEYJ182VCHIP RESISTOR 1.8KR01,04,06055 ERJ6GEYJ104VCHIP RESISTOR 100KR16,34,39055 ERJ6GEYJ101VCHIP RESISTOR 100RR07,27055 ERJ6GEYJ103VCHIP RESISTOR 10KR11055 ERJ6GEYJ181VCHIP RESISTOR 180RR10,17,18,19,38055 ERJ6GEYJ102VCHIP RESISTOR 1KRL48,RR48055 ERJ6GEYJ272VCHIP RESISTOR 2.7KR28,41,

19、43055 ERJ6GEYJ223VCHIP RESISTOR 22KR29,37055 ERJ6GEYJ220VCHIP RESISTOR 22RRL46,RR46,RL47,RR47055 ERJ6GEYJ274VCHIP RESISTOR 270KR08,21055 ERJ6GEYJ271VCHIP RESISTOR 270RR56055 ERJ6GEYJ225VCHIP RESISTOR 2M2R13,33,42,RL49,RR49055 ERJ6GEYJ332VCHIP RESISTOR 3.3KR31055 ERJ6GEYJ392VCHIP RESISTOR 3.9KR20055

20、ERJ6GEYJ331VCHIP RESISTOR 330RR26055 ERJ6GEYJ393VCHIP RESISTOR 39KR24,30055 ERJ6GEYJ472VCHIP RESISTOR 4.7KR05,15,22055 ERJ6GEYJ471VCHIP RESISTOR 470RR36,40,44055 ERJ6GEYJ473VCHIP RESISTOR 47KR02,32055 ERJ6GEYJ562VCHIP RESISTOR 5.6KR09,12,14055 ERJ6GEYJ561VCHIP RESISTOR 560RR03055 ERJ6GEYJ623VCHIP RE

21、SISTOR 62KPCB 016E-40020023004Parts List 3/4SYMBOLPARTS NO.DESCRIPTIONR50055 ERJ6GEYJ681VCHIP RESISTOR 680RR25055 ERJ6GEYJ683VCHIP RESISTOR 68KT01021 RLV152A00COIL AM ANTT03021 RLV154A00COIL AM IFTT02021 RLV155A00COIL AM OSCT04021 RLV157A00COIL FM DET-AT05021 RLV158A00COIL FM DET-BTL06,TR06021 RLV15

22、6A00COIL MPX LPFCP20068 B5B-PH-KSCONNECTOR POSTCN10068 B8B-PH-KSCONNECTOR POSTX03023 HC49U-006 CRYSTAL 4.332MHZX01023 HC49U-004 CRYSTAL 7.2MHZD02034 T1N4148-86DIODEC14,35,44041 TUTES1C101-TF ELECTROLYTIC CAPACITOR 16V100uFC05,11041 TUTES1C470-TF ELECTROLYTIC CAPACITOR 16V47uFC46041 TUTES1HR22-TF ELE

23、CTROLYTIC CAPACITOR 50V0.22uFC20,39,49,53,55,56,CL51,CR51041 TUTES1H100-TF ELECTROLYTIC CAPACITOR 50V10uFC03,27041 TUTES1H3R3-TF ELECTROLYTIC CAPACITOR 50V3.3uFC26,28,41041 TUTES1H4R7-TF ELECTROLYTIC CAPACITOR 50V4.7uFC33,45,47041 TUTES1H010-TF ELECTROLYTIC CAPACITOR 50VIuFCF01-03023 SFE10.7M-02FM C

24、ERAMIC FILTERFE01092 FTA4-460HFRONT-ENDIC04031 BU1920FICIC02031 LA1266ICIC01031 LM7001JUMICIC03031 LA3401ICL01021 2648601430MICRO INDUCTOR 20.8mH068 DM-2GM-0 MINI JUMPER PLUG C31042 TP50V332JMYLAR CAPACITORC30,48042 TP50V223JMYLAR CAPACITORC32042 TP50V393JMYLAR CAPACITORVR03051 TRH063MCJ5RSEMI-FIXD

25、RESISTOR VR 220KVR01051 TRH063MCS3RSEMI-FIXD RESISTOR VR 4.7KVR02051 TRH063MCS4RSEMI-FIXD RESISTOR VR 47KC15044 S50V470PJSTYROL CAPACITORANT01067 SC0210586NTERMINAL ANTNNAQL08,QR08032 TDTC323TSTRANSISTORQ03032 KTC3194YTRANSISTORQ01,Q02,Q07032 KTC3198Y-ATTRANSISTORQ04,Q05,Q06,Q09032 KRA107MTRANSISTOR

26、TC01045 TZ03N100TRIMMERVD01,VD02034 SVC321SPA-B2VARACTOR DIODEZD01,ZD03034 TRD5.1JST1ZENER DIODEC116,117047 ECJ2VF1H473ZCHIP CAPASITOR 0.047uFC110-112047 ECJ2VF1H104ZCHIP CAPASITOR 0.1uFC115047 ECJ2VG1H102JCHIP CAPASITOR 1000PFC101-107,114047 ECJ2VG1H101JCHIP CAPASITOR 100PFC109047 ECJ2VG1H821JCHIP

27、CAPASITOR 820PFR101-107,115055 ERJ6GEYJ122VCHIP RESISTOR 1.2KR113,116-120,123,125055 ERJ6GEYJ103VCHIP RESISTOR 10KR131-165055 ERJ6GEYJ124VCHIP RESISTOR 120KR124055 ERJ6GEYJ102VCHIP RESISTOR 1KR121,122055 ERJ6GEYJ2R2VCHIP RESISTOR 2.2RR114,126055 ERJ6GEYJ472VCHIP RESISTOR 4.7KR108-111055 ERJ6GEYJ473V

28、CHIP RESISTOR 47KCPF103068 S4B-PH-KSCONNECTOR POSTPCB ASSY 016 E-1319A005Parts List 4/4SYMBOLPARTS NO.DESCRIPTIONCPF105068 S5B-PH-KSCONNECTOR POSTCPF102,104068 S7B-PH-KSCONNECTOR POSTD101-108034 T1N4148-86DIODEC108041 UTES1H220-FB ELECTROLYTIC CAPACITOR 50V22uFFL101035 SVR12MM18FL TUBEIC101031 CXP82

29、832-316QICIC102031 AT24C16PC-2.7ICXT101023 CST10.0MTWRESONATORSW101-123061 C-4679A01TACT SWITCHQ101032 KTC3198Y-ATTRANSISTOR012 RV4-09A00POWER BOTTON014 C-4550A02UPPER COVER014 4TQN-12B#6BOTTOM BOARD015 RP-392PRINTED REAR CHASSIS 019 4TR-2418UPPER COVER SPACER019 4TSH-19#2PLASTIC FOOT 50F021 RLA145A

30、00AM LOOP ANTENNA034 SEL1124RLED069 C-4629A01AC INLET072 4TR-24893.5mm PLUG SHIELD CORD072 4TR-3228T TYPE ANTENNA072 C-4620A01AC CORD SET for STD072 C-4622A01AC CORD SET for AUSTRALIA072 C-4623A01AC CORD SET for UK072 C-4624A01AC CORD SET for CEE072 C-4738A01PIN PLUG CORD (AU)081 TY4-04A00INSIDE CAR

31、TON081 TZ-164-1STYROL SIDE MOULDING092 RR-T92REMOTE UNIT505 FRT-961FRONT PANEL ASSYOTHERS6Tuner Adjustment MethodFM Section* Necessary measurement equipmentRDS/STEREO Multiplexer, FM/AM Signal Generator, Audio Analyzer, Oscilloscope, Digital Volt Meter (DVM) (A) Center adjustRDS/STEREO Multiplexer S

32、etting - MODE : MONO- Audio Frequency : 1KHzFM Signal Generator Setting - Deviation : 75KHz- Radio Frequency : 98.1MHz- Output Level : 66dBRT961 Setting - FM Frequency : 97.9MHz- FM MODE : MONO1. Turn FM Signal Generator Modulation on2. Connect DVM (+)(-) terminals to Jumper J7 and J8 and measure th

33、e volt.3. If measured voltage is not adjusted within 10mV, Make this measured volt 0 by adjusting T04 (FM-DET-A Coil).: The adjustment should be within 10mV4. After this adjustment, measure THD(Total Harmonic Distortion) with Audio Signal Generator5. Adjust THD to minimum point with T05(FM-DET-B Coi

34、l).: THD shuold be within 0.5%(B) Channel Separation adjustRDS/STEREO Multiplexer Setting - MODE : STEREO ( ONLY L-CH Signal OUT )- Audio Frequency : 1KHzFM Signal Generator Setting - Deviation : 75KHz- Radio Frequency : 98.1MHz- Output Level : 66dBRT961 Setting - FM Frequency : 98.1MHz- FM MODE : S

35、TEREO1. Turn FM Signal Generator Modulation on after modulating only L-CH (or only R-CH) at STEREO Multiplexer.2. Confirm if STEREOindicator is turned ON on the display3. Measure output level via Audio Signal Analyzer and make the level as standard.4. Turn FM Signal Generator Modulation on after mod

36、ulating only R-CH (or only L-CH) at STEREO Multiplexer.5. Measure output level via Audio Signal Analyzer (measure per a dB)6. If meaured output level is not lower than -40dB, Adjust output level to minimum position with VR03 ( CH-SEPA. ADJ.).: lower than -40dB(C) TUNED Level adjustRDS/STEREO Multipl

37、exer Setting - MODE : STEREO- Audio Frequency : 1KHzFM Signal Generator Setting - Deviation : 75KHz- Radio Frequency : 98.1MHz- Output Level : 26dBRT961 Setting - FM Frequency : 98.1MHz- FM MODE : STEREO1. Turn FM Signal Generator Modulation ON (confirm if output level is 26dB)2. Change the output l

38、evel of the Generator from 20dB to 30dB and Confirm if STEREO & TUNED indicator of the DISPLAY turns on at 26db(5 dB)3. If these indicators do not turn on at higher than 26dB(5dB) or do not turn off at lower than 26(5dB) , Adjust VR02 ( FM-ADJ ) up to the moment where STEREO & TUNED indicator turns

39、OFF & ON at 26dB.4. Confirm if STEREO & TUNED turns OFF when decreasing the output level slowly from 26dB to 25dB, 24dB . (Repeat the above 3. if not OFF in lower than 24dB.)5. Push RT-961s TUNE UP or DOWN button long at Signal Generator Output Level 26dB and start Auto search. Confirm if search sto

40、ps at FM Frequency 98.1MHz. (Examine both of High Freq. - 98.1MHz search , Low Freq. - 98.1MHz search)7AM Section* Necessary measurement equipment :AM Signal Generator, Audio Signal Analyzer, Dummy Load, Oscilloscope, Digital Volt Meter (DVM)(A) VT adjustAM Signal Generator Setting 1. Adjust AM Freq

41、uency of RT-961 to 522KHz. (or 520KHz)2. Connect (-) terminal of DVM with GND ( or chassis ) and connect (+) terminal with Jumper J3 ( VT CHECK ) and mesaure voltage. ( Low Freq. VT)3. Adjust VT to 1.1V with T02 (AM-OSC Coil).* In case of USA version, AM freq. range is 520KHz 1710KHz. So, adjust as

42、below. at 520KHz, VT = 1.1V ( Low Freq. VT)(B) Output Level adjustAM Signal Generator Setting - Modulation : 30%- Audio Frequency : 400Hz- Output Level : 100dB- Radio Frequency : 603KHz (or 600KHz )RT-961 Setting - AM Frequency : 603KHz/1404KHz/999KHz (or 600KHz/1400KHz/1000KHz)1. Turn AM Signal Gen

43、erator Modulation ON2. Adjust RT-961 AM Freq. to 603KHz (or 600KHz) and measure output level with Audio Signal analyzer.3. Adjust output level to maximum point with T01 ( AM-ANT ).4. Adjust AM Signal Generator & RT-961 AM Frequency to 1404KHz (or 1400KHz) and measure output level.5. Adjust output le

44、vel to maximum point with TC01 (White Trimmer).6. Repeat above 2. 5. steps 2 3 times until adusting to best output level.7. Adjust AM Signal Generator & RT-961 AM Frequency to 999KHz (or 1000KHz) and measure output level.8. Adjust level to maximum position with T03 (AM-IFT).(C) TUNED Level adjustAM

45、Signal Generator Setting - Modulation : 30%- Audio Frequency : 400Hz- Radio Frequency : 999KHz (or 1000KHZ)- Output Level : 84dBRT-961 Setting - AM Frequency : 999KHz (or 1000KHz)1. Turn AM Signal Generator Modulation ON ( Make sure if Output level is 84dB )2. If TUNED indicator does not turn on at

46、higher than 8086dB(Generator output), Adjust VR01 ( AM-ADJ ) up to the moment where TUNED indicator tunrs OFF & ON again3. Confirm if TUNED turns OFF when decreasing the output level of AM Signal Generator slowly from 84dB to 80dB.4. Push RT-961 TUNE UP or DOWN button long at AM Signal Generator Out

47、put Level 84dB and start AUTO search. Confirm if search stops at AM Frequency 999KHz (or 1000KHz). 999KHz(or 1000KHz) search , Low Freq. - 999KHz(or 1000KHz) search 8PCB AssemblyFront PCB 016 E-1319A00Main PCB 016 X-1320A01-049PCB AssemblyTuner PCB 4002002300 Top Side ViewTuner PCB 4002002300 Bottom View10Wiring Diagram11Schematic Diagram - 112Schematic Diagram - 3022 T-1065N0113Schematic Diagram - 214